Improvement in coal-scoops



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Letters Potent No. 93,336, dated August 3, 1869.

IMPROVEMENT IN CCAL-SC'OOPYS.

The Schedule referred to in these Letters Patent and making part of the same.

. To all whom, fit may concern:

Be it known that I, H. A. PALMER, of Rochester, in the county of Monroe, and State of New York, have inventeda certain. n ew andnseful Improvement in The blade is made of castfsteel. The' front edge a is made wide, .but it graduallyv narrows in the rear,

and, at l, it is made of circular form, as shown.

A'peculiarity, also, that distinguishes it from other scoops, consists in makin-g the rear sides 'c c of gradualdishing or concave form, thereby leaving no acute angle at the junction of the sides and bottom, as in other devices.

The whole surface of the scoop-sides as well as bottom-is filled with perforations d el. These may be of any desired shape, round, square, or angular.

'Ihey are so arranged as to make the webs between of sufficient strength, and yet to secure a large sifting-action.

The round form, as shown, is found most eiective in screening coal, as the escape of dust ismore effective, and there is less wear to the perforations by the avoidance of sharp angles. There is also less danger of clogging. I also combine lightness with strength.

The scoop, as above constructed, is especially adap ted to screening coal. AThe broad'front insures the easy loading of the scoop, and also presents a broad surface in discharging.

The contracted rear furnishes, as it were, a reservoir for the accumulation of the material.- The result is, that in the forward throw of the scoop, the accumulated coal diverges and spreads over the whole broad front surface, in a thin she'et, and is thus exposed to the best sifting-action.

By this means, but a single strokeA or throw of the coal is required, and that 'action is the natural one resulting from taking up and throwing the material.

The coal thus receives less action than would be otherwise required, which n'ot only avoids unnecessary labor, but also saves waste in the wear of the coal itsel The perforation of the sides of the blade, as welles the bottom,l and the gradual merging of the sides'with the bottom, presents a special'- advantage, since the sifting-action thu's commences at the first movement of the coal, and the coal itself keeps in contact with the bottom at all times, which it would not do if passing over an abrupt angle. These features I believe to be new and valuable.

I am. aware that coal-scoops have been made of cast-iron, of skeleton form, as in Sabbatons patent, January 4, 1859. Such are of little value, from their great weight and liability to break.v

I am also aware that itA is. common to perforate common small sifting ash-shovels; but, in that case, the shovels aredierent in form from mine, and do not have the side perforationsnor the gradual incline.

My scoop is very light and strong, and not easily worn out or broken.

. What I claim as my invention, and desire to secure by Letters Patent, is-l l As a new article of manufacture, the scoop herein described, the same consisting of a body A, having a curved back, b, gradually-sloping sides, c, of dishingform, and a flaring mouth, a, when perforated throughout and constructed of cast-steel, as set forth.

In witness whereof, I have hereunto signed my name, in the presence of two subscribing witnesses.

H. A. PALMER.

Witnesses:

It. F. Oseoon, GEO. W. Mmm'. 

